<template>
    <div class="nav-bar">
        <!-- slot是插槽 goback是后退-->
        <div class="left" @click="goback">
            <slot name="left">
                <img src="~assets/images/left.png" alt="">
            </slot>
        </div>
        <div class="center"><slot>EWShop</slot></div>
        <div class="right"><slot name="right"></slot></div>
    </div>
</template>
<script>
import {useRouter} from 'vue-router'
export default {
    name:'NavBar',
    setup(){
        // 点击箭头返回上一个页面
        const router = useRouter();
        const goback = ()=>{
            router.go(-1);
        }
        
        // 返回函数
        return{
            goback
        }
    }
}
</script>
<style scoped>
    .nav-bar{
        display: flex;
        background-color: var(--color-tint);
        color: #FFFFFF;
        position: fixed;
        left: 0;
        right: 0;
        top: 0;
        z-index: 20;
        height: 45px;
        line-height: 45px;
        text-align: center;
        box-shadow: 0 2px 0px rgba(100,100,100,0.1);
    }
    .left,.right{
        width: 60px;
    }
    .left img{
        width: 45px;
        padding: 12px;
    }
    .center{
        flex: 1;
    }
</style>
